Flight 520 was a diplomatic flight scheduled to fly from Los Angeles' Van Nuys Airfield to Frankfurt during Day 5. It was operated by a Boeing 727-200 Advanced. The flight staff consisted of Captain Stan Cotter, co-pilot Scott Evans, flight attendants Sue and Dan; an Air Marshal, George Avila, was also aboard. Don Fakinson was the co-pilot scheduled to fly with Cotter, but he was replaced at the last minute by Scott Evans, an accomplice of Christopher Henderson. The flight was hijacked by Jack Bauer.